光子计数CT在头颈部CTA检查中的技术优势与临床应用

Technical Advantages and Clinical Applications of Photon-Counting Detector CT in Head and Neck CTA Examinations

摘要: 头颈部CT血管成像(CT angiography, CTA)是临床诊断头颈部血管疾病的常用检查方法。传统能量积分探测器CT (energy-integrating detectors CT, EID-CT)虽已在临床应用中积累了丰富经验，但受限于分辨率不足等短板，在当前精准诊疗需求不断提升的背景下，其局限性逐渐凸显。相比之下，光子计数探测器CT (photon counting detector CT, PCD-CT)具备显著优势：不仅能有效提升CT图像的空间分辨率，还可减少辐射剂量与对比剂用量，同时具备过滤金属伪影的能力。已有研究证实，PCD-CT能够突破传统CT的技术瓶颈，为头颈部血管疾病的精准诊疗提供关键影像支持。基于此，本文将系统综述PCD-CT的核心技术原理，深入分析其在头颈部CTA检查中的技术优势与临床应用价值，旨在为该技术在头颈部血管疾病诊疗领域的推广与实践提供参考。

Abstract: Head and neck CT angiography (CTA) is a commonly used examination method for the clinical diagnosis of head and neck vascular diseases. Although traditional energy-integrating detector CT (EID-CT) has accumulated rich experience in clinical application, it is limited by shortcomings such as insufficient resolution. With the continuous improvement of current demands for precise diagnosis and treatment, its limitations have gradually become prominent. In contrast, photon counting detector CT (PCD-CT) has significant advantages: it can not only effectively improve the spatial resolution of CT images, but also reduce radiation dose and contrast agent dosage, while having the ability to filter metal artifacts. Existing studies have confirmed that PCD-CT can break through the technical bottlenecks of traditional CT and provide key imaging support for the precise diagnosis and treatment of head and neck vascular diseases. Based on this, this article will systematically review the core technical principles of PCD-CT, deeply analyze its technical advantages and clinical application value in head and neck CTA examinations, aiming to provide references for the promotion and practice of this technology in the field of diagnosis and treatment of head and neck vascular diseases.